Metal-working machine



F. 0. HOAGLAND.

METAL WORKING MACHINE.

APPLICATION FILED MAY I0. i917.

Patented Deo; 2,1919.

2 SHEETS-SHEET l.

F. Q. HoAGLANm METAL WORKING MACHINE. APPLICATION FILED -MAY I0. 19|?.

Patented Dec. 2,1919.

2 SHEETS-SHEET 2.

/If n if I I l UNITED sTA'rEs PATENT oEErcE.

FRAN K O. HOAGLAND, OF HARTFORD, CONNECTICUT, ASSIGNOR T0 PRATT & WHITNEY COMPANY, 0F HARTFORD, CONNECTICUT, A CORPORATIONOF NEWJERSEY.

METAL-WORKING MACHINE.

Specification of Letters Patent.

Patented Dec. 2, 1919.

Application led May 10, 1917. Serial No. 167,640.l

This invention relates toa machine which' Ais similar in many respects to that set forth in my contemporaneously pending application filed April 5, 1917, Serial No. 159,883. The present machine like that in said other application can be utilized in widely-different arts, although it is of especial advantage in the production of bullets such for instance as. are *used in small arms. The

present machine, like that in the aforesaid application, comprises mechanism for supporting na blank and for supplying to the blank one or V a succession of blows upon its surface. In the earlier application before referred to, I have shown a machine having two rotatable rollers for applying a plurality of blows in rapid'succession to the surface of the blank, these blows being delivered by means of ribs formed on the surlface of two jrapidly rotating rollers arranged side by side. In the present case I make use of an outer annular roller and an inner roller which is surrounded by the outer roller and which is arranged eccentrically with respectl thereto. The bullet blank is engaged and acted upon by the surfaces of the two rollers `at the throat where the surfaces are close together.

In the drawings accompanying and forming part of the present specification I have showing the rollers and the driving means therefor. l

Fig. 2 is a detail view in sectional elevation of the outer roller.

Fig. 3 is a view on an enlarged scale of a portion of the operative part of the outer roller.

Fig. 4 is alike view of a periphery of the inner roller.

Fig. 5 is an end view, partly in section,

portion of the sov showing the rollers and the devices for feeding` and'supporting the blanks.

' ig. 6 is a front view,.partly in section, showing the mechanism illustrated in Fig.5. Fig. 7 is a detail view of the supporting device. y

Fig. 8 is a detail view of-one of the cams and the member coperating therewith.

Fig. 9 is a view similar to Fig. 4 but showing an alternateform of inner roller.

Like characters refer to like parts throughout the several views which it will be obvious, are on different scales.

The diiferent parts of the machine may be supported by any suitable framework.

That shown for the purpose is denoted in a v general way by 2. Use is made 'of two rollers as 3 and 4 having circular cross sections, the roller 3 incloslng or surrounding the roller 4 and both being rotative about preferably horizontal axes which are in parallelism- The outer roller 3 as shown eX- tends centrally from and is integral or at least rigid witlragournal-piece rotative in a suitable bearing-opening in 1V@ framework 2. The journal-piece has at its rear a web 6 provided with a peripheral flange 7,. As shown the liange 7 has gear teeth 8 on its inner surface, so that the flange 7 and web 6 constitute an internal gear. 4These teeth 8 mesh with the'teeth of a pinion 9 on a shaft 10 adapted to be driven inl any desirable way. The roller 3 and journal-piece 45 are hollow and through them extends a shaft 11, having at its front end the .roller 4 in coperative relationship with the roller 3 as will hereinafter more particularly appear. A pinion 14 is connected with the shaft 11 and is adapted to mesh with the teeth 8. The teeth are actually in mesh, as will hereinafter more particularly appear,

when the rollers 3 and 4- are relativel positioned for rolling a blank into nished shape. The roller-3 is rabbeted out as at 15 to receive the roller 4 as shown best in Fig. 1 and as also indicated in Figs. 2, 5 and 6. This roller 4 has a movement bodily as will hereinafter more particularly appear to permit of the positioning of a blank to be. rolled.

The shaft 1l, which it will be remembered carries the roller 4, is carried by eccentrics 16 which are operated by toggles 17. These toggles are controlled in sultable manner to move the eccentrics so as to effect the movement of the roller 4 bodily toward and from the companion roller 3. The rollers are shown in working relation in Fig. 5, the toggle 17 being straightenedA When the roller 4 is in working relation it is slightly separated from the operative or inner surface of the roller 3 slightly, as shown in Figs. 1 and 5. The minimum distance at the throat of the rollers between the operative faces represents virtually the transverse extent of the finished article. The toggles 17 can be operated in anysuitable manner, it being clear that the are flexed to effect the movement of the ro ler 4 bodily toward the left in Fig. 5 and thus permit the lpositioning of a4 blank. When the blank is in position to be rolled, the roller 4 is moved toward the roller 3 and, as both are rotating at this time, the blank will be rolled to effect the desired purposes. In the present oase as in my prior-application when the article is finished, the longitudinal center line will pass through the center of gravity thereof which is an important if not vital matter.

- In addition to this I remove proj ectionsthat may be on the blank, the bullet when discharged from the machine being smooth.

The outer roller 3 has on its lnner surface ribs 18 which are annular or circular, their sides converging outwardly. Transversely the inner or operative surface ofthe .hollow v roller 3 is arched or concaved to conform to the longitudinal curvature of the blank. The peripheral portion of the roller 4 is similarly arched or concaved to conform to the longitudinal curvaturebf the blank or bullet. The roller 4 preferably has on itsfV outer side practically rectangular projections 19, as shown in Fig. 4. These projections are arranged in rows, the projections of. the respective rows being transversely staggered as shown. The inner roller 4 i's also provided with rows of marginal projections 20 and 21 similar to the projections 19. It will be clear thatthe inner roller 4 is peripherally corrugated or toothed so as to apply a succession of blows to the blank between, it and the companion roller 3.

These two rollers 3 and 4 constantly ro tate, the roller 4 as will be clear being separated from the roller 3 to permit the introduction of a blank therebetween, and as l have already explained, the toggles, 17 in connection with the eccentrics 16 effect this separation. The blanks travel through a chute 22 and are moved therefrom vby a rod 23 located at the upper end of a rocker lever 24 fulcrumed between its ends to a bracket o1' bearing25 on the framework 2. The lower end of this rocking lever 24 is engaged and operated by a cam 26 on a horizontal power shaft 27. The rod 23 acts to push blanks from the chute 22 into a delivery member .28. From v f' the delivery member the blanks are pushed from the holder 28 into a supporting device such as that denoted in a general way by 35. The supportin device 35 which is vshown in detail in Fig comprises an upper jaw 36 which may as shown berigid with the part 28 and a lower movable jaw 39. The operative portions of the jaws 36 and 39 are longitudinally curved to receive a bullet blank 40, the jaws loosely holding the blank while it is being rolled. At the conclusion of thc rolling operation the lower jaw 39 is positively moved away from the upper jaw 36 in suitable manner. To accomplish this result, jaw 39 is connected with a horizontally movable plunger 41, which is pivotally connected with the upper end of a lever 42. The lever 42 is pivotally mounted on the bracket 25 and the lower end of the lever engages a cam 46 fixed to the power shaft 27. On the movement of the jaw 39 outward in the direction indicated by dotted lines in Fig. 7, is strikes the holder 28' and is thus moved ldownward. as indicated. This combinedlthe positioning of a blank between the rollers. It will be understood that the movement of the roller 4 is effected by flexing the toggles 17. With the roller 4 thus laterally moved, the rod 29is advanced through the action of the cam 34A in the manner' already described to push a blank from the delivery member or holder 28 in between the jaws 36 and 39. When this 'is accomplished the toggles 17 are straightened to move the rotating roller 4 into contact with the blank so as to roll thevblank and peripherally smooth it. The jaws 36 and 39 in the construction shown prevent any movement of the blank 40 except the turning thereof about its longitudinal axis. When the blank isIl smoothed the plunger 41 is drawn back by the action of the cam 46 in the manner a ready described, carrying the finished blank therewith, the jaw' 39 striking the part 28 on its backward movement and freein the finished blank which is then discharged into the upper end of the delivery chute 47.

What I claim is: y

l. A machine of the class described comprising internal and external lrollers having circular cross' sections, and means for presenting a blank between the rollers, the rollers having `neans on their adjacent surfaces coperating to smooth theblank.

2. A machineof the class described comprising internal and external rollers having circular cross sections, and means for presenting a blank between the rollers, the rollers having means on their adjacent surfaces coperating to smooth the blankand one of the surfaces being roughened. v l

3. A machine of the class described comprising internal and external rollers having circular cross sections, and means for presenting a blank between the rollers, one of the rollers having a series of spaced ribs, the other roller havin peripheral projec, tions, theprojections being transverse to the ribs. t

4. A machine of the class described comprising internal and external rollers having circular cross sections, and means for/ presenting a blank between the rollers, the inner surface of the external roller having 'ribs which are parallel to leach otherand which are concentric with the axis of rota-A tion of said roller, the other roller having on its surface transverse projections.

5.A machine of the class described comprising internal and external rollers having circular cross sections, and means for presenting a blank between the rollers, the

internalroller having external projections in staggered relation to each other.

6. A machine of the class described com! prising internal and external rollers having circular cross sections, and means for presenting a blank between the rollers, the rollers having means on their adjacent surfaces coperating to smooth the blank, the blank presenting means also having means to prevent 'bodily movement of the blank during the rolling operation.

7. A machine of the class described comprising internal and external rollers havlng circular cross sections, means for presentmg a blank between the rollers and for preventing its bodily movement yet free v rotation while between the rollers, the latter having means on their adj acent'surfaees coperating to smooth the blank.

8. A machine of the class described comprising internal. and external rollers having circular cross sections, the adjacent surfaces ofA which are dished, the rollers when in active relation being separated from each other, and means for presenting a blank between the rollers, the rollers having meansl on their concaved surfaces coperating to ,smooth the blank.

9. In a/bullet making machine, the combination of inner and outer relatively eccentric rollers rotatable about approximately parallel axes and having their surfaces provided with generally longitudinal ribs, and

means adapted to engage a bullet blank at opposite sides thereof and to support it at the throatof the rollers in position to be engaged by both of them, the said supporting means serving to hold the blank against bolfily movement under the influence of the ro ers.

10. In a bullet making machine, the combination of inner and outer relatively eccentric rollers rotatable about approximately parallel axes and having their surfaces provided with generally longitudinal ri-bs, and means adapted to engage a bullet blank at olpposite sides thereof and to support it at t e` throat of the rollers in position to be engaged by both of them, the said supporting means serving =to hold the blankagainst l bodily movement during the rolling operawidth of the throat and thus permitthe insertion of a blank.

12. In a bullet making machine, the comn ymately parallel axes, means adapted to engage a bullet blank at opposite sides thereof and to support it at the throat of the rollers in position to be engaged by both of them, means for bodily moving one of the rollers relatively to the other to increase the Width of the throat and thuspermit the insertion of a blank and fomthepireturning the roller to normal position, aliia meansfor lsupplying a blank to the supporting means when 15 the roller has been moved as aforesaid.

In testimony whereof I affix my signature in the presence of-two Witnesses. l vFRANK O. HOAGLAND.

Witnesses:

W. M. S'roons, HEATH SUTnnRLAND. 

